scipp/plopp: 26.2.0

What's Changed

• deps: add lower pin to ipykernel by @jokasimr in https://github.com/scipp/plopp/pull/501
• Fix plotting with custom types as keys by @nvaytet in https://github.com/scipp/plopp/pull/502
• Lower bound fix by @nvaytet in https://github.com/scipp/plopp/pull/505
• Cbar should be False by default in scatter2d plot by @nvaytet in https://github.com/scipp/plopp/pull/506
• Fix empty color for masked NaN values in 2d plots by @nvaytet in https://github.com/scipp/plopp/pull/511
• Do not send all kwargs to 1d figure in inspector plot by @nvaytet in https://github.com/scipp/plopp/pull/513
• Copier update Jan 26 by @nvaytet in https://github.com/scipp/plopp/pull/517
• fix: replace label for multiple scatter by @jokasimr in https://github.com/scipp/plopp/pull/519
• Do not call autoscale when removing node if autoscale is False by @nvaytet in https://github.com/scipp/plopp/pull/522
• feat: polygon inspector tool by @jokasimr in https://github.com/scipp/plopp/pull/518
• Add a button to make value based selection in 3d clipping tool by @nvaytet in https://github.com/scipp/plopp/pull/479
• Use local copy of crosshairs icon to fix linkcheck by @nvaytet in https://github.com/scipp/plopp/pull/524
• Copier update to remove depandanbot by @nvaytet in https://github.com/scipp/plopp/pull/525

Full Changelog: https://github.com/scipp/plopp/compare/25.11.0...26.2.0